Force-pump.



A. J. TYLER.

FORCE PUMP.

APPLICATION FILED 11u11, 1911.

1,039,336.' Patented sep1.24,1912.

2 SHEETS-SHEET l.

A. J. TYLER.

FORGE PUMP. i APPLIOTION` FILED MAY 17, 1911.

1,039,336, Patented Sept. 24, 1912.

2 SHEETS-SHEET 2.

NVENTO?.

ORNE YJ,

COLUMBIA PLANomlAPM co,. WASHINGTON. ny cA UNITED STATES VPATENT OFFICE.

AARON J. TYLER, OF ROCHESTER, NEW YORK, ASSIGNOR TO FRANK S. BIDWELL, OFSHORTSVILLE, NEW YORK.

FORCE-PUMP.

T0 all whom t may concern.'

Be it known that l, AARON J. TYLER, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented certain new and useful Improvements in Force- Pumps, ofwhich the following is a specifi cat-ion.

This invention relates to pumps and more particularly to that generalclass known as force pumps.

The object of the invention is to provide a force pump of simple anddurable construction, capable of being used for pumping either water orair without the necessity of disturbing the 'valvular arrangement of thepump or in any manner altering or changing the construction thereof.

A further object of the invent-ion is to provide a pump, the valve andpiston of which are so constructed as to occupy the least possibleamount of space within the pump cylinder and to give thoroughly reliableservice under all conditions.V

A further object is to provide means whereby the lower valve and seat,as well as the piston, may be quickly reversed so as to reverse theaction of the pump, when desired.

A further object is to provide novel means for clamping the cup-shapedleather washer or piston :in engagement with the piston head, and meansfor forcing the washer or piston in contact with the interior wall ofthe cylinder so as to prevent leakage between the parts and at the sametime insure uniform wear on said piston.

A still further object of the invention is generally to improve thisclass of devices so as to increase their utility, durability andefliciency.

Further objects and advantages will appear in the following description,it being understood that various changes in form, proportions and minordetails of construction may be resorted to within the scope of theappended claims.

For a full understanding of the invention and the merits thereof,reference is to be had to the following description and accompanyingdrawings, in which:

Figure 1 is a vertical sectional view of a force pump constructed inaccordance with my invention; Fig. 2 is a side elevation; Fig. 3 shows abottom plan view, transverse Specification of Letters Patent.

Application filed May 17, 1911.

Patented Sept. 24, 1912.

Serial No. 627,697.

sectional view, top plan view and side elevation of one of the disksconstituting the piston head; Fig. et shows a bottom plan View,transverse sectional view, top plan view and side elevation of the otherdisk of the piston head, the cup-shaped leather washer or piston beingshown in position on said disk in the side view thereof; Fig. 5 Shows abottom plan View, transverse sectional view, top plan view and sideelevation of the lower valve; Fig. 6 shows a top plan view and an edgeview of the piston valve; Fig. 7 shows a top plan view and sideelevation of the cupshaped leather washer for the piston, the washerbeing also shown in section, after being forced into proper shape; Fig.8 is a top plan view and an edge view of the valve for the lower valveseat.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The improved force pump forming the subject matter of the presentinvention comprises a cylinderl 5 having sleeves G rigidly secured tothe opposite ends thereof and provided with exteriorl threads 7 forengagement with the adjacent cylinder heads, indicated at 8 and 9. Theinterior walls of the sleeves (i are preferably provided withcirciunferential shoulders 10 for contact with the adjacent endsof thecylinder 5 so as not to offer any surface obstruction within thecylinder which would tend to impede the flow of liquid when the pump isin operation.

The cylinder heads 8 and 9 are provided with laterally extending nipples1.1 and 12 having exterior threads 13 for engagement withcorrespondingly threaded pipe sections, the nipple 11 constituting aninlet port and the nipple 1Q an outlet port. The cylinder head 8 isprovided with a gland 14 and an inwardly extending flange 15, therebeing agasket 16 interposed between the flange 15 and the end of theadjacent sleeve 6 in order to prevent leakage between the parts.

Slidably mounted in the cylinder 5, is a piston rod 17, one end of whichprojects through the gland 14, while the other end thereof is providedwith a circumferential stop shoulder 18 defining a reduced cylindricalextension 19, the free end of which is exteriorly threaded, as indicatedY at 20. Mounted on the inner end of the rod 17, is a piston head,preferably formed of co-acting disks 21 and 22, each disk in turn beingformed of inner and outer concentric rings connected by radiating ribs23 defining intermediate ports 24 to permit the passage of air or liquidthrough the valve, as the case may be. One side of the disk 21 isprovided with a curved wall 25 which forms a seat for a cup-shapedleather washer or packing 26, said disk being also provided with anannular shoulder 27 arranged at an angle to the radius of the disk andat a right angle to the curved wall 25 of the disk and forming anabutment for the adjacent end or edge of the cup-shaped washer orpacking 26, the latter being preferably placed on the disk with the hairside of the leather next to the interior wall of the cylinder. The edgeof the inner disk 22 is curved at 28 to conform to the curvature of thewall 25 and is adapted to bear against the inner face of the cup-shapedleather Washer or packing adjacent the shoulder 27 of the disk 21 forthe purpose of clampingvthe same on the piston head. It will be observedthat the inner ring and the radial arms of each disk occupysubstantially the same diametrical plane so that the two disks may fitclose together thereby reducing the space taken up in the cylinder bythem and effectually securing the packing. The wall of the opening inthe inner ring of the disk 21 is smooth and unobstructed and flts overthe cylindrical extension 19 of the piston rod for contact with theshoulder ,18 thereof, while the wall of the opening in the inner ring ofthe disk 22 is threaded for engagement with the threads 20 on saidpiston rod so that by rotating the disk 22 on the threaded end of therod, not only will the leather washer or piston 26 be firmly clamped inengagement with the disk 21, but both disks will be securely heldagainst accidental displacement on the rod 17.

One side of the disk 22 is concaved at 29 to form a seat for a valve 30,the latter being preferably made of fabric packing, such as cloth orwire, and adapted to normally close the ports 24 in the co-acting disksconstituting the piston head. The valve 30 is normally fiat, and isretained in position on its concaved seat 29 by means of a nut 31engaging the threaded end of the rod 17 and bearing against a metallicor other washer 32. It will here be noted that as the valve 30 isnormally fiat, when the nut 31 Vis adjusted on the threaded. end of therod,

the central portion of the valve will be forced inwardly in contact withthe concaved sea-t 29 so as to frictionally hold the outer edge of thevalve in contact with the outer ring of the disk It will also be notedthat the nut 31, in addition to retaining the valve 30 in position onthe disk 22, also assists in preventing accidental displacement ofthepiston head.

One side of the disk 22, at the curved portion 28 thereof, is preferablycut-away to form an annular' groove 33, so as to permit a portion of theair or water passing through the ports 24 o-f the piston head to come incontact with the inner face of t-he leather washer 26 and force the hairside of the leather in contact with the interior wall of the cylinder 5,thus not only to ,prevent leakage between the parts, but also to insurea uniform wear on the washer. That portion of the disk 21, opposite thecurved wall 25 thereof, is preferably dished, as indicated at 34, whilethat portion of the mating disk 22, opposite the concaved face 29, isalso preferably dished, as indicated at 35.

Disposed at the lower end of the cylinder 5 and preferably arranged atsubstantially right angles to the outlet port 12, is an auxiliary disk36 having a laterally extending anchoring flange 37 which is supportedon a flange 38 extending inwardly from the lower head 9 of the cylinderand similar inconstruction to the iange 15. A gasket 39 is preferablyinterposed between the flanges 37 and 38 and a similar gasket 40 betweenthe flange 37 and end of the adjacent sleeve 6 in order to preventleakage of air or water when the pump is in operation. One side of thedisk 36 is provided with a concaved face 41 constituting a seat for avalve 42, the latter being similar in construction to the valve 30 andretained in position on its seat by a screw 43, the threaded shank ofwhich engages a correspondingly threaded opening 44 formed in saidauxiliary disk. The inner and outer rings comprising the auxiliary disk36 are connected by radiating ribs 45 to form intermediate ports 46,through which the air or water is discharged on the downward stroke ofthe piston, the outer' ring of the auxiliary disk, at the concaved facethereof, being preferably formed with a relatively short inwardlyextending flange 47 against which the outer edge of the valve 42 restswhen the latter is in closed position.

When the device is used for pumping water, the operation thereof is asfollows: 0n the upward stroke of the piston, the valve 42 will be movedto closed position and a partial vacuum formed between said `valve andthe piston, with the result vthat as the piston continues to travel inan upward direction, the water above said piston will open the valve 30and pass to the front thereof. 0n the downward stroke of the piston, thevalve 42 will be moved to open pump will operate in exactly the samemanner when pumping air. l

Attention is here called to the fact that the parts comprising thepiston head, as well as the parts comprising the lower valve, may bereversed so as to reverse the action of thepump when desired, in whichevent, the member 9 will constitute the suction head and the member Sthe force head of the pump, as will be readily understood. It will alsobe noted that the leather washer 26 is normally flat and will be forcedinto substantially cupshape by engagement with the co-acting diskscomprising the piston head without the formation of any wrinkles orcreases whatever, thus permitt-ing a nice fit between the leather washerand cylinder and insuring the proper operation of the pump at all times.

It will of course be understood that the disks may be formed with anydesired number of radiating ribs and ports, and that the piston rod maybe provided with any suitable operating handle or said pump operatedfrom some extraneous source of power without departing from the spiritof the invention. l

Having thus described the invention, what is claimed as new is:

l. A pump including a cylinder having inlet and outlet ports, a valvearranged near one of the ports, a piston rod operating within thecylinder, a piston head mounted on the rod and including co-acting diskshaving ports formed therein, one of said disks being provided with aconcaved outer face constituting a valve seat, a flexible valve securedon the piston rod and normally engaging said seat, and a flexiblepacking interposed between and held by the disks.

2. A pump including a cylinder having inlet and outlet ports, a pistonrod operating within the cylinder, a piston head carried by the rod andincluding (1o-acting disks having radiating ribs defining intermediateports, one of said disks being provided with a concaved outer faceconstituting a valve seat and the other with a curved wall, a flexiblepacking interposed between .and held by the disks and bearing againstsaid curved wall, a valve engaging the concaved valve seat, and anauxiliary valve arranged at one end of the cylinder.

3. A pump including a cylinder having inlet and outlet ports, a valvearranged near one of the ports, a piston rod operating within thecylinder and provided with a reduced extension defining an annular stopshoulder, said extension having a threaded extremity, a piston headincluding co-acting disks, one of which is smooth-bored and bearsagainst the stop shoulder, the other disk being threaded to fit on theextremity of the piston rod and provided with a concaved outer faceconstituting a valve seat, a

valve engaging said seat, and a cup-shaped flexible packing interposedbetween the disks, the threaded disk clamping the packing against thefirst-mentioned disk and said disk against the stop shoulder.

4. A pump including a cylinder having inlet and outlet ports, a valvearranged near one of the ports, a piston rod operating within thecylinder and having one end thereof provided with an annular stopshoulder defining a reduced cylindrical extension, the free end of whichis threaded, a piston head mounted on the rod and including co-actingdisks, one of which bears against the stop shoulder, 011e disk beingsmooth-bored and the other disk being threaded to engage the threadedportion of the rod and provided with a concaved outer face constitutinga valve seat, both of said disks being provided with ports, a valveengaging the concaved face of the adjacent disk, a flexible packinginterposed between and held by said disks, and a nut engaging thethreads on the rod and retaining bo-th disks and the valve thereon.

5. A pump including a cylinder having inlet and outlet ports, a valvearranged near one of the ports, a piston rod operating within thecylinder, a piston head carried by the rod and including co-acting disksone of which is provided with an internal longitudinally curved wall andthe other with a concaved outer face constituting a valve seat andhaving its outer edge opposing the outer wall of the first-mentioneddisk, both of said disks being provided with ports, a valve bearingagainst the valve seat, and a flexible packing interposed between andheld by the said curved wall and the edge opposing the same, the outeredge of one of the disks being cut away adjacent the inner face of thepacking to form an annular groove.

6. A pump including a cylinder having inlet and outlet ports, a valvedisposed near one of the ports, a piston rod working within thecylinder, a smooth-bored disk fitted on the end of said rod and providedat its outer edge with an extended fiared inner surface and an annularshoulder at the inner edge of said surface, said shoulder being disposedobliquely to the radius of said disk and at a right angle to the saidflared surface, a packing fitted against said surface with its edgebearing squarely against said shoulder, a second disk fitted on thepiston rod and having its outer edge flared to conform to the outer edgeof the first-mentioned disk and bearing on the packing and clamping thesame against said surface and the said shoulder, a valve fitting againstsaid second disk, and a securing nut mounted on the piston rod andbearing against said valve.

7. A pump including a cylinder having oppositely disposed exteriorlythreaded sleeves, correspondingly threaded heads engaging the threads onsaid sleeves and providedwith inlet and outlet ports, said headsj,

`being lprovided vwith -inwardly .extending flanges, a washer interposedvbetween -theg flange of one of the heads andthe adjacent? sleeve, adisk disposed at the outlet port andi having a laterally extendingflange supportedi on the flange of the other head, said disk being?provided with ports and having a eoncavedi face constituting a valveseat, aivalve engaging said seat, a washer interposed between the;flange on the disk and the flange on the ad-l jacent head, a secondwasher interposedbetween the liange on the disk and the adja-t kcentsleeve of the cylinder, a pistonfrod op .erating within thegeylinder,afpiston head carried by the rod andincluding eo-acting lported disks, aValve carried byfone of the vin presence of two witnesses.

AARoN J. TYLER. {as} Witnesses .HERBERT LEARY, VILLIAM ILEARY.

vCcpiesofithis'patent lmay nel obtained for five cents each, by,addressingthe' l Gommissionergof -Patents,

